8.4 Decarburization Referee Test Method 2—Measurement:
8.4.1 Determine the base metal hardness as in 8.2.1 by taking the average of all Position 1 and Position 2 readings, as first measured during the routine test, and then on three additional adjacent threads. Determine the condition of the specimen by subtracting the average reading noted at Position 2 from the average reading noted at Position 1, in accordance
with 8.3.1.